基于双端不同步数据的10kV线路故障测距方法  

Research on Localization of 10kV Fault Line Based on Two-Terminal Asynchronous Data

作　　者：杨凌霄[1] 曹娟娟[1] 王书华[1] 

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454003

出　　处：《煤矿机电》2008年第5期77-78,80,共3页Colliery Mechanical & Electrical Technology

基　　金：河南省自然科学基金项目(编号:0611022300)

摘　　要：针对农业电网10kV线路在运行中存在的单相接地、两相短路等问题,结合故障定位已有的算法,提出了一种基于双端不同步数据的故障测距方法,将两端数据采样的不同步因素以不同步角dδ的形式引入,建立了故障测距x关于dδ的方程;为了提高测距精度,采用k个点的不同步角的平均值dδn作为不同步角差。建立了农业电网10kV线路单相接地故障的仿真模型,采用双端不同步数据故障测距方法进行了故障测距,仿真结果表明,该算法在不同的情况下都提高了测距精度,证明了此算法的有效性。Combining the existing fault localization algorithm, aiming at the existing problem on the 10kV Rural Network line, the fault localization method of two-terminal asynchronous data for 10kV line is presented, Using the asynchronous angel δd for asynchronous factor of two-terminal data sampling, the method establishes the equation of fault location x to improve the location accuracy with the average of asynchronous angle of k points as asynchronous angle. The single-phase ground fault circuit simulation model of the 10 kV Rural Network is established. The simulation results show that this algorithm have increased location accuracy under different circumstances and proved the effectiveness of this algorithm.

关 键 词：故障测距 双端郴同步数据 MATLAB仿真 单相故障 

分 类 号：TM732[电气工程—电力系统及自动化]